code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/rest/DeleteCommand.java

   1 /*
   2  * Copyright 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.client.rest;
  20
  21 import gr.ebs.gss.client.GSS;
  22 import gr.ebs.gss.client.exceptions.InsufficientPermissionsException;
  23
  24 import com.google.gwt.http.client.Request;
  25 import com.google.gwt.http.client.RequestCallback;
  26 import com.google.gwt.http.client.Response;
  27
  28
  29 /**
  30  * @author kman
  31  *
  32  */
  33 public abstract class DeleteCommand extends RestCommand{
  34
  35         boolean complete = false;
  36
  37         public DeleteCommand(String pathToDelete){
  38                 this(pathToDelete, true);
  39         }
  40
  41
  42         public DeleteCommand(String pathToDelete, boolean showLoading){
  43                 setShowLoadingIndicator(showLoading);
  44                 if(isShowLoadingIndicator())
  45                         GSS.get().showLoadingIndicator();
  46                 final String path;
  47                 if(pathToDelete.endsWith("/"))
  48                         path = pathToDelete;
  49                 else
  50                         path = pathToDelete+"/";
  51                 RestRequestBuilder builder = new RestRequestBuilder("DELETE", path);
  52
  53                 try {
  54                         handleHeaders(builder, path);
  55                         builder.sendRequest("", new RequestCallback() {
  56
  57
  58                                 public void onError(Request arg0, Throwable arg1) {
  59                                         complete = true;
  60                                         DeleteCommand.this.onError(arg1);
  61                                 }
  62
  63
  64                                 public void onResponseReceived(Request arg0, Response arg1) {
  65                                         complete=true;
  66                                         if(arg1.getStatusCode() == 204)
  67                                                 onComplete();
  68                                         else if(arg1.getStatusCode() == 403)
  69                                                 sessionExpired();
  70                                         else if(arg1.getStatusCode() == 405)
  71                                                 DeleteCommand.this.onError(new InsufficientPermissionsException("You don't have permissions to delete this resource"));
  72                                         else
  73                                                 DeleteCommand.this.onError(new RestException(path, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));
  74                                 }
  75
  76                         });
  77                 } catch (Exception ex) {
  78                         complete=true;
  79                         onError(ex);
  80                 }
  81         }
  82
  83         public boolean isComplete() {
  84                 return complete;
  85         }
  86
  87         public boolean execute() {
  88                 boolean com = isComplete();
  89                 if(com){
  90                         if(isShowLoadingIndicator())
  91                                 GSS.get().hideLoadingIndicator();
  92                         return false;
  93                 }
  94                 return true;
  95         }
  96
  97 }